Undetectable Browser Automation: This is the most critical requirement. The developer must be proficient with puppeteer-extra and its stealth plugin to mask automation from anti-bot systems like Cloudflare. · Fingerprint Management: They must know how to create unique browser fingerprints (Canvas, WebGL, etc.) for each account session to prevent tracking. · proxy Rotation: Experience integrating residential proxy services (like Bright Data) and building systems for automatic IP rotation and failover is essential. · Desktop Application Architecture: The developer needs experience building desktop apps with Electron.js or packaging Node.js/Python bots into executables. · Direct API Integration: The ability to reverse-engineer and interact directly with backend APIs, which is far faster than UI automation, is a major plus.